Matches 1 - 50 out of 82 1 2 >
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RE41015 Bicycle battery charger and speedometer circuit  
A circuit that receives signals from a dynamo and provides signals for charging a battery and indicating bicycle speed. The circuit includes a first switching circuit adapted to receive the dynamo...
7592758 Stabilizer with brightness control for high intensity discharge lamp  
A stabilizer with brightness control for a High Intensity discharge lamp comprising a base, an positive electrode terminal configured with a power input of the base, a negative electrode terminal...
7495398 Discharge lamp lighting apparatus  
A discharge lamp lighting apparatus includes: an inverter circuit including a switch circuit and a high-voltage transformer; a step-up circuit connected at the input stage of the inverter circuit;...
7436123 Discharge lamp ballast device and lighting appliance  
An inverter controller dives an inverter to operate at a switching frequency selectively from one of a preheating frequency (f 1 ), a starting frequency (f 2 ), and a lighting frequency (f 3 )...
7405715 LED light apparatus with instantly adjustable color intensity  
An instantly controllable LED light apparatus provides an LED array ( 34 ) formed of red, green and blue LEDs in a regular arrangement. The apparatus also provides a unitary power supply/controller...
7382100 Lighting control device having improved long fade off  
A lighting control device for controlling the light intensity level of at least one lamp is disclosed. The lighting control device includes an actuator and a controller operable to cause the light...
7359545 Method and system to compensate for lamp intensity differences in a photolithographic inspection tool  
An after develop inspection tool considers tool-to-tool variability when determining confidence score for wafers under inspection. A golden wafer is used to calculate a RGB signature as well as the...
7245086 Lamp operating circuit and operating method for a lamp having active current measurement  
The invention relates to a circuit and to a method for operating a lamp. In this case, a reactance for the purpose of detecting the lamp voltage, a zero point detection device for the purpose of...
7170238 Control systems and methods  
Control systems and methods. An embodiment of control system may comprise a processor for receiving control signals from at least one input device when linked thereto. Computer-readable program...
7071634 Lighting control device having improved long fade off  
A lighting control device for controlling the light intensity level of at least one lamp is disclosed. The lighting control device includes a microcontroller and a user-actuatable switch controller...
6963178 Apparatus for controlling operation of gas discharge devices  
A power controller for fluorescent lamp dimming is disclosed, using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share...
6933686 Programmable AC power switch  
An AC controller provides programmable switching of AC power flow, together with producing a source of DC power for the AC controller. The AC controller is connected in series with only one side of...
6819059 Flash strobe power supply system and method  
A reliable strobe power supply is disclosed that provides requisite light energy for emergency uses without causing EMI problems. A two phase dual flyback power converter operating in transitional...
6774582 Light dimming control method and apparatus  
Push and release switch operation with a light off causes the light to dim up. Push and release operation with the light on causes it to dim up or to dim down dependant on the level of light...
6531836 Automatic light switch  
The present invention discloses a light switch designed physically similarly to a present day conventional light switch having a face plate and on/off switching capability for connection to...
6531830 Discharge-lamp drive apparatus  
An apparatus for driving a discharge lamp includes a piezoelectric transformer connected to the discharge lamp. A drive device operates for feeding controllable power to the discharge lamp via the...
6369524 Addressable light dimmer and addressing system  
An addressable lighting device and control system uses a DMX-512 protocol controller or other serial network protocol controller to selectively generate an electronic address for the addressable...
6320331 Light source apparatus using electric lamp as light source  
A light source apparatus is used in a video endoscope system having a charge coupled device (CCD) image sensor and a monitor. The light source apparatus provides illumination to a scene to be...
6242872 Programmable gradual illumination lighting device  
A programmable gradual illumination device (10) for disposition intermediate a conventional light fixture (100) and a conventional light bulb (200). The device (10) includes a housing member (20)...
6188181 Lighting control system for different load types  
An improved signal generator that is capable of providing a multitude of control schemes to connected ballasts or transformers to adjust the luminous output of an attached lamp or light source. The...
5994791 Portable controlled lighting system  
A portable controlled lighting system comprising at least one lamp connected to an operating circuit for operating the lamp and a control circuit coupled to the operating circuit for controlling...
5811940 Phase-shift lamp control  
The invention relates to a method for the independent control of individual or a group of fluorescent lamps of a lighting system operated by the a.c. supply system with the main functions of rapid...
5804927 Light emitting apparatus for a bicycle  
A light emitting apparatus for a bicycle includes a pulse generator for generating pulses having a predetermined period and a predetermined duty cycle, a light emitter for emitting light when a...
5757145 Dimming control system and method for a fluorescent lamp  
The illumination intensity of a fluorescent lamp is controlled in response to control signals generated at a remote location on the power supply conductors of a lamp circuit and decoding those...
5691605 Electronic ballast with interface circuitry for multiple dimming inputs  
A lamp controller includes an interface circuit, or receiver, which receives an input signal and decodes control signals supplied from a transmitting device, such as a power line wall controller,...
5629587 Programmable lighting control system for controlling illumination duration and intensity levels of lamps in multiple lighting strings  
A programmable lighting control system for advertising, decorative, artistic, and Christmas lighting applications, consists of a standalone controller, an optional power booster device, and a...
5612597 Oscillating driver circuit with power factor correction, electronic lamp ballast employing same and driver method  
A circuit and method for driving a load such as a gas discharge illumination device from an ac main supply with a high power factor. The circuit includes a pair of electronic switches arranged in a...
5585699 Control circuit for fluorescent lamps  
A dimmer logic for fluorescent lamps is described which operates after the principal of a two-point circuit with two stable operating points, where in dimmer operation periodic changes between the...
5519263 Three-way toggle dimmer switch  
A three-way toggle dimmer circuit controls the brightness of a lamp by independent operation of two light dimmer switches with each dimmer switch having its own electronic light dimmer circuit....
5465031 Programmable actuator for light dimmer  
A self-contained programmable actuator can easily be mounted directly onto the outside of the face plate of a standard wall switch having a built-in light dimmer. This actuator can be programmed to...
5406176 Computer controlled stage lighting system  
A stage or theatre lighting system having a plurality of multiple parameter lamp units each comprising means for producing a light beam having a plurality of adjustable parameters relating to beam...
5399940 Lighting indicating device having plural illuminating elements with all such elements being illuminated with one being greater than the others  
A lighting control device for controlling the state and intensity of a lamp includes a user-actuatable intensity selector for selecting a desired lamp intensity level between minimum and maximum...
5371444 Electronic ballast power supply for gas discharge lamp including booster start circuit responsive to power up condition  
A kickstart system and method for operating gas discharge lamps is disclosed wherein the amplitude and frequency of the starting voltage are raised for a predetermined period of time to ionize the...
5254909 Automatic luminosity cyclical modulation device for a lighting facility  
A device for modulating and controlling the level of luminosity output by a lighting facility. The modulation may be of average current or voltage. The device modulates electrical power in a...
5248919 Lighting control device  
A lighting control device for controlling the state and intensity level of at least one lamp. The device includes a user-actuatable intensity selector for selecting a desired intensity level...
5221877 Power reduction control for inductive lighting installation  
A control system for reducing power used by an inductive lighting installation, usually plural fluorescent lamps and a ballast, includes an A.C. power input circuit to the installation with a...
5189344 Solid state strobe tube control circuit with programmable flash pattern  
A solid state control circuit for storing a preset pattern and discharging a strobe tube in accordance with the preset pattern. A solid state control circuit has a programmable memory comprising a...
5177409 Controllable electronic ballast  
In an electronic ballast for fluorescent lamps, means are provided by which the lamps are powered at their normal level whenever power line voltage is initially connected to the ballast. However,...
5072216 Remote controlled track lighting system  
A track lighting system is provided including a power track electrically connected to electrical power lines in a building. A plurality of track lighting units are selectively engageable with the...
5041767 Digital controller for gas discharge tube  
A gas discharge tube is controlled in intensity and in the length along such tube that is illuminated by providing digital control signals to an analog drive circuit connected to the high-voltage...
5001398 Lamp intensity control system having over-current protection  
A lamp intensity control system combines the functions of the tail light, the brake light, and the turn indicator light signals into one signal for controlling a plurality of lamps in an...
4933607 Exposure device for reprographics and method  
An exposure device with a metal-halide lamp for the exposure of photosensitive materials in reprographics includes a circuit having a power source and an adjusting device in the circuit for...
4924151 Multi-zone, multi-scene lighting control system  
A system for controlling power to multiple groups of lights requires only a few controls. The system permits power to each group of lights to be adjusted independently and, at the same time, to be...
4885508 System for controlling the intensity of high power lights  
An electronic control system employing logical control for controlling a gas vapor arc globe. Power from a power source such as an AC power line or DC or AC generator is connected by a control...
4733138 Programmable multicircuit wall-mounted controller  
A programmable lighting circuit controller for controlling a plurality of household lighting circuits includes a microprocessor and an electronically erasable programmable read only memory for...
4733136 Method of regulating the power of vapor discharge lamps  
During operation of ionized vapor discharge lamps and the partial load range, the lamp current is reduced from the rated value, the drop in voltage is measured during and after the reduction of the...
4704563 Fluorescent lamp operating circuit  
A fluorescent lamp operating circuit includes a high frequency electronic ballast circuit for providing a controlled output to a fluorescent lamp load. A control signal is detected from the power...
4656398 Lighting assembly  
A lighting assembly including a plurality of housing sections, a series of rib groups arranged circumferentially on the exterior of the housing sections, and a remote control assembly for...
4649323 Microcomputer-controlled light switch  
A light level controller includes a microcomputer controlled light switch which responds to a manual tap or a longer manual depression of the switch in order to initiate various control modes for a...
4396871 Arrangement for digital brightness control of lamps  
The invention relates to an arrangement for digital brightness control of lamps or groups of lamps in control channels particularly for use in planetarium illumination comprising in each control...
Matches 1 - 50 out of 82 1 2 >